Folding chair



FIG. 1 is a perspective view of a folding chair showing my design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view, the left side view being a mirror image thereof;

FIG. 4 is a rear elevational view; and

FIG. 5 is a top plan view thereof. 

The ornamental design for a folding chair, as shown and described. 